Device for expelling the contents of collapsible tubes



July'B, 19 5- c. J. CAMPFENS ET AL DEVICE FOR EXPELLING THE CONTENTS OFCOLLAPSIBLE TUBES Filed March 26, 1940 Patented July 3, 1945 UNITEDSTATE s PATENT OFFICE DEVICE FOR EXPELLING THE CONTENTS or COLLAPSIBLETUBES Cornelis Josef Campfens and Hendrik Dalstra, Middelharnis,Netherlands; vested in the Alien Property Custodian Application March26, 1940, Serial No. 326,088 In the Netherlands April 21,,1939

,8 Claims. (craze-4.6)

' The invention relates to a device for expelling the contents of a tubefor liquid, semi-liquid or plastic substances, as generally used;

tapering towards a fiat end'where the metal is bent over, and areprovided at the'other end with These tubes are made of a metal adaptedtobe easily.

/ V i I cover is closed again. deformed. They are mainlyQfcyIindricaIjshape,

. be"screwed-onand off. since-the tubewhen out a thick and harder metalfront-plate .which'canrectangular cross section. The holder hasanopening through which the nipple of the tube to be compressed mayextend,'-and a hinged'longitudinal wall adapted to be pressed inwardlyinto the holder. The wall opposite the hinged wall is provided with adepression or recess having such wall the cover in front -:of theexpelling opening is lifted and the contents of the tube are expelled.If the pressure is released then the Aclosurecap need not of use isalways closed.

nccordinguto the-invention the deviceme be constructediso that' 'in. apredetermined position of the. hinged wall the cover may-be turned insuch'a manner that the cam thereon will-become located outside theupwardly directed path of movement of the wall edge. Thus the hingedwall may be turned into an entirely open position and a tube may beinserted into the holder.

Within the spirit of the invention various emg bodiments and details ofthe expelling device may be used. Some of these embodiments and detailswill be described hereinafter with reference to the accompanyingdrawing, inwhich Fig.1 is a longitudinal section of a tube holder.

Fig. 2 is a front elevational view thereof. Fig. 3 is a cross section onthe line III-III in Fig. 1.

dimensions that during the expellingrof the" con-.

tents of the tube the :hard maybe received therein.

In this way the tube may remain within the holder'until the last portionof the contents of the tube has been-expelled. The depressed por-' tionof the holder, or the recess provided therein, during the gradualvexpelling of the contents end plate of'the tube V allows the hardendplate ofthje tube to beleft undeformed, while nevertheless the softtube metal therebelow is entirely compressed. 'The base of the holderand'thehin'ged longitudinal wallfacing it might occupy asymmetricalposition with respect to the'longi-tudinal' axis of the tube during thewhole'expelling movement. I

According to the inventionthis' efiectwill still be increasedif thedepression or recess hassu'ch,

a length that the free front edge [of the'hinged longitudinal wall whenpressed inwardly lies substantially flush with the edge of thedepression or recess. r

Further, according to the inventionythedevice may be constructed so thata cover for closing mounted so that the hinged longitudinal wall of theholder, while pressing with its edge against a cam .or irregular portionof the cover; in its a normal position keeps the cover closed; whereason moving the wall inwardly the coverjfollows this movement under. theinfluence of a spring and frees the expelling tube.

By a pressureoftthe"thumb on the Fig. 4'shows a detail on 9. largerscale.

5 is a partial longitudinal section of a modified embodiment'of thetube'holder.

Fig.6 is a partial longitudinal section of a rd embodiment. l Y

I As appearsfroml igures l, 2-'an'd 3 the holder Fig. 7 is a rear; elevational view thereof.

I has a mainly 'triang u lar longitudinal section and a rectangularcrosssection. From Fig. 2 alsothegs'hape is to'be seen which in practice hasgiven the best. results rand which has been chosen so as to alford space,for the collapsed material of the tube.

' The holder'l has three stationary side walls f and. one movable,wallf-Z 'yirhich is hinged 1 to the holder at .3; g .The' wall} may bepressed inwardly :into theholder soi th'at" the'xcontents of a 'tubePlaced between" the wallgl and the wall-fl will' be'expelled:The'expelling nipple of this tube extends throughan oblong hole 5 in thetop wall 6 of theholder. I'he'm buthof this nipple isautomatically'closed by a cover 1 cooperating the expelling opening ofthe tube is swingably with the hinged wall 2; This cooperation isobtained in. the. following manner.

[The wall. 2 isFc'onnected'tothe holder by a spring} in the form" of ahelical'spring'around the hinge 3 in-such iii-manner thatlthewalltends't'o', occupy "the position shown in Fig. 1.

I In this position;the edge 19. of the wall 2 presses against anirregular portion l llhof :a bearing I! connected tothe coverj'l byastem I2; The bear ,ll) connected to the holder.

ing II is pivotally and also resiliently sprln "In the position shown inFig. l the tension of the spring 8 overcomesfthe tension of the spring13 so that the cover I closes the opening 5. However, if the wall 2 ispressed inwardly then the spring l3 causes the cover I to be opened.-

said cover having a bearing pivotally connected to said holder, a springurging said cover to open position, a cam portion on said bearingadapted to cooperate'with the outer edge of said In order topermit thewall 2 to be swung entirely outwardly so that. a tube may be insertedinto'the holder the shape of the bearing H and theirregular portion Ithereof are such that in the inwardly pressed position of the wall 2 thecover I, with its stem I2 and bearing ll may be turned away entirely, sothat the wall 2 may pass (Fig.4).

The helical spring 8 as shown in Fig. 2 is provided centrally with aportion l4 located within the holder in a substantially flat plane. Thisportion l4 serves to press the tube in the holder against the base 4 sothat the tube, also when its contents have been partially expelled,cannot be shifted.

The top wall 6 of the holder merges into the wall 4 via a depressedportion I5. This depression serves to receive the thicker-hard metalfront plate of the tube when the material'of the tube itself isdeformed. I

The tube, which initially in entirely filled condition-is located on thewall 4, will, at least as regards its axis, be' gradually shifted in adirection towards such wall during the expelling operation. For thisreason the opening 5 in the top, wall 6 has been made oblong. In Fig. 1a tube in unexpelled condition within the holder is indicated by thinlines.

The edge 9 of the wall 2 in itsinnermost position substantially is flushwith the edge of the depression l5.

In Fig. 5 a device is shown adapted to exert a stronger force on thewall 2, in particular if this wall has approached its extreme innermostposi "tion. To this end alever l6, having a pressure surface I1, ismounted for rotation about the same axis as that about which the cover 1may be swung, but free therefrom. The lower side of said lever whenpressed downwardly moves over the wall 2.

Another device adapted to exert a strong pressure on the wall 2 is shownin Figures 6 and 7. This-device comprises a double-armed lever l8 havingits fulcrum at I9 on the wall 2. The short front arm of this lever isbifurcated and both ends thereof engage toothed racks 2| fixed to thewall 6. The long rear arm 22 of the lever I8 is urged upwardly by aspring 23. Now, by pressing with the thumb on the arm 22 it is possibleto repeatedly depress the wall 2 with increasing force for a shortdistance.

We claim:

l. A device for expelling the contents of collapsible tubes comprising aholder for the tube having side walls and-a top wall, one of said sidewalls being hinged to said' holder at one end thereof, a spring normallyurging said hinged wall outwardly, the top wall of said holder having anopening therein through which the nipple of the tube may extend, acoverior closing the opening of the nipple, said cover being swingablymounted at one of the edges of the top wall of said holder on an axisparallel to the axis about which said hinged side wall swings "and meansfor transmitting the movement of said hinged side wall to said cover.

2. A device as set forth in claim 1 in which said transmitting meanscomprises a stem on hinged wall in such a way that said wall in itsnormal position keeps said cover closed while when said wall is movedinwardly said cover under the action of said last mentioned spring willuncover the opening in-said nipple.

3. A device as set forth in'claim 1 in which said cover is mounted ona'stem, a bearing on said stem pivotally mounted on said holder, a camprovided upon said' bearing normally cooperating with the free end ofsaid hinged wall and said cam being so formed that when said cover ismoved tov a certain position, said cam will be located outside.thepaft'h oflmovement of the free end of saidhinged wall.

4. A device for expelling the contents of coliapsible tubes comprising aholder for the tube having side walls and a topflwall, one of said sidewalls being hinged to said holder at one end thereof, a spring normallyurging said hinged wall outwardly, the top wall of said holder having anopening therein through which the nipple of the tube may extend, a coverfor closing the opening of the nipplQsaid cover being swingably mountedat one of the edges of the top wall of said holder on an axis parallelto the axis about which said hinged side wall swings and means fortransmitting the movement of said hinged side wall to said cover, saidspring having a central portion extending inwardly into said holder andbeing located in a substantially flat plane. I .v

5. A device for expelling the contents of collapsible tubes comprising aholder for the tube having side walls and a top wall, one of said sidewalls being hinged to said holder at one end thereof, a spring normallyurging said hinged wall outwardly, the top wall of said holder having anopening therein through which the nipple of the tube may extend, a coverfor closing the opening of the nipple, said cover being swingablymounted at one of the edges of the top wall of said holder on an axisparallel to the axis about which said hinged side wall swings and meansfor transmitting the movement of said hinged side wall to said cover, apressure lever pivotally connected to said top wall So that one end ofsaid lever may move over said hinged wall and the length of said leverand the location of its pivot axis being so chosen relatively to thesaid hinged wall that said lever is approximately perpendicular to saidhinged wall when such Wall has been moved into its innermost position.

6. A device for expelling the contents of collapsible tubes comprising aholder for the tube having side walls and a top wall, one of said sidewalls being hinged to said holder at one end thereof, a spring normallyurging said hinged wall outwardly, the top wall of said holder having anopening therein through which the nipple of the tube may extend, a coverfor closing the opening of the nipple, said cover being swingablymounted at one of the edges of the top wall of said holder on an axisparallel to the axis about which said hinged side wall swings and meansfor transmitting the movement of said hinged side wall to said cover, adouble armed lever pivotally mounted adjacent the free end of saidhinged wall, a stationary rack provided upon said holder, a pawl-shapedend provided upon the short arm of said lever cooperating with said rackand a spring cooperating with the long arm of assume 3 said levernormally urging said long arm away from said hinged wall so that bypressing on the end of said long lever arm said hinted wall may bedepressed by the interaction 01' said pawlshaped end with said rack.

7. A device for expelling the contents of collapsible tubes comprising aholder for a tube, one side wall of said holder being hinged at one endof said holder, a spring normally urging said side wall outwardly, thetop wall of said holder having an opening therein through which thenipple of the tube. extends, a cover for closing the opening in thenipple and means for transmitting the movement of said hinged side wallto said cover.

8. A device as set iorth in claim 7 in which said transmitting meanscomprises a stem upon said cover, a bearing upon said stem pivotallyconnected to said holder, a sprins normall urgin: said cover to openposition, a cam portion upon said bearing for cooperating with the freeend of said hinged wall in such a wa that when

